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- W2528802044 abstract "A two-time-scale guidance law is proposed for soft landing on asteroids to recover the desired descent trajectory in the presence of uncertainties due to inaccurate model of the asteroid's gravitational field as well as solar gravity and radiation pressure. A high-gain observer estimates the uncertainties over the faster time scale and a nonlinear controller uses these estimates to cancel the effect of uncertainties over the slower time scale. This way, the spacecraft trajectory will converge to the desired one after a short transient phase. The two-time-scale guidance law is compared with the terminal-sliding mode control approach. The proposed method shows a better transient behavior and requires smoother control signals with lower amplitudes." @default.
- W2528802044 created "2016-10-14" @default.
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- W2528802044 date "2016-05-01" @default.
- W2528802044 modified "2023-09-24" @default.
- W2528802044 title "Performance recovery in the presence of uncertainty for soft landing on asteroids" @default.
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- W2528802044 doi "https://doi.org/10.1109/iraniancee.2016.7585751" @default.
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